51480697 has 2 divisors, whose sum is σ = 51480698. Its totient is φ = 51480696.

The previous prime is 51480661. The next prime is 51480701. The reversal of 51480697 is 79608415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 12243001 = 6264^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 51480697 - 2¹¹ = 51478649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51480617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25740348 + 25740349.

It is an arithmetic number, because the mean of its divisors is an integer number (25740349).

Almost surely, 2^51480697 is an apocalyptic number.

It is an amenable number.

51480697 is a deficient number, since it is larger than the sum of its proper divisors (1).

51480697 is an equidigital number, since it uses as much as digits as its factorization.

51480697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 51480697 is about 7175.0050174198. The cubic root of 51480697 is about 372.0044537371.

The spelling of 51480697 in words is "fifty-one million, four hundred eighty thousand, six hundred ninety-seven".